Here it is! The first taster of what's to come from the forges of Helios. 
I created this installer file in only ten minutes, using Helios. It was created entirely by Helios, and has not been modified afterwards.
The interface could do with a little tweaking, and I think a little of the intelligent page detection logic is a little rusty. However, it works, and it works very well!
i've downloaded them both, there so... fun!
I had to rename them to install.php before they worked.
I'm going to fix this for the final release. Thanks for the heads-up.